Real-time all-digital radio-over-fiber LTE transmission

Radio-over-fiber is a key-enabling-technology for next generation wireless networks. To support an increasing number of antennas, a CloudRAN approach that maximally aggregates base station functionality of the different antenna sites is the most economically feasible. To support light weight antenna...

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Bibliographic Details
Published in2017 Advances in Wireless and Optical Communications (RTUWO) pp. 83 - 86
Main Authors Van Kerrebrouck, Joris, Breyne, Laurens, Haolin Li, Bauwelinck, Johan, Torfs, Guy, Demeester, Piet, Bohn, Thomas
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2017
Subjects
Antennas
Frequency modulation
Optical fiber communication
Optical modulation
Pulse width modulation
Vertical cavity surface emitting lasers
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Summary:Radio-over-fiber is a key-enabling-technology for next generation wireless networks. To support an increasing number of antennas, a CloudRAN approach that maximally aggregates base station functionality of the different antenna sites is the most economically feasible. To support light weight antenna units, analog radio-over-fiber is most promising. To mitigate linearity constraints of optical modulators, an all-digital transmitter can be used. In this paper, LTE transmission is demonstrated over 200 m OM4 multimode fiber using a VCSEL and a resonant transimpedance amplifier. The VCSEL is directly modulated with a high-speed 2-level signal generated in real-time on an FPGA. After reception of this signal, the adjacent channel power ratio was measured to be -45.6 dB. This is within the LTE specifications, proving this is a cost and power effective solution for next generation wireless networks.
DOI:10.1109/RTUWO.2017.8228510